fix corner case in collapse_vars (#4332)

fixes #4331
2020-12-06 10:30:50 +00:00
parent 37f4f56752
commit 3c384cf9a8
2 changed files with 27 additions and 0 deletions
--- a/test/compress/spread.js
+++ b/test/compress/spread.js
@@ -399,3 +399,29 @@ issue_4329: {
    expect_stdout: "PASS"
    node_version: ">=8"
 }
+
+issue_4331: {
+    options = {
+        collapse_vars: true,
+        toplevel: true,
+    }
+    input: {
+        var a = "PASS", b;
+        console,
+        b = a;
+        (function() {
+            a++;
+        })(...a);
+        console.log(b);
+    }
+    expect: {
+        var a = "PASS", b;
+        console;
+        (function() {
+            a++;
+        })(...b = a);
+        console.log(b);
+    }
+    expect_stdout: "PASS"
+    node_version: ">=8"
+}